While being a massive critical and commercial success in its own right, Wicked also sets up the conflict between Cynthia Erivo’s Elphaba and the rest of Oz, including her former classmates, in the second half. Wicked depicts the origin story of the infamous Wicked Witch of the West, beginning with her enrolling at Shiz University, where she eventually forms a lifelong friendship with the future Glinda the Good, magnificently played by Ariana Grande-Butera. However, Elphaba does not have an easy time of it at Shiz as the laughingstock of the student body before becoming the queen bee’s best friend.

https://screenrant.com/wicked-shiz-students-panic-ending-explained/